A kind of preparation method of external wall insulation board containing steel tailings

Abstract

The invention discloses a preparation method for an exterior-wall thermal-insulation board containing steel tailings. The method comprises the following steps: 1) putting steel tailings in a ball mill, crushing to have the granularity of 2-3 mm, then mixing with 10-12 parts of calcium carbide slurry, 8-10 parts of cobs and 3-5 parts of potash feldspar to obtain a mixture, and adding water accounting for 35-55% by mass of the mixture and plaster accounting for 0.5-0.9% by mass of the mixture, so as to prepare a slurry; and 2) standing the stirred slurry at 58 DEG C, and controlling the standing foaming time to be 2 h and the standing exterior temperature to be 18 DEG C. The prepared exterior-wall thermal-insulation board is a novel building exterior-wall thermal-insulation material, by using the material, the thermal insulation performance of the thermal-insulation mortar is obviously improved, the bonding performance between a thermal-insulation material and boundary mortar is enhanced, and the usage cost is reduced.

Description

technical field [0001] The invention relates to the field of new building materials, in particular to a method for preparing an external wall heat insulation board containing steel tailings. Background technique [0002] When thermal insulation materials are used for building exterior walls, thermal insulation materials such as benzene board, extruded board or polyurethane foam are often used. Although these materials have better thermal insulation effects, their fire performance is poor and there are potential safety hazards; at the same time, when used For high-rise buildings, the wind pressure resistance is low; polyurethane foaming agent is used to foam polyurethane, and polyurethane foaming agent will produce toxic gas during the foaming process, and it cannot be completely eliminated after being used as heat insulation material, so The environmental protection factor is greatly reduced, and the cost is also high; rubber powder polystyrene particles and perlite particle...

AI Technical Summary

Problems solved by technology

[0002] When thermal insulation materials are used for building exterior walls, thermal insulation materials such as benzene board, extruded board or polyurethane foam are often used. Although these materials have better thermal insulation effects, their fire performance is poor and there are potential safety hazards; at the same time, when used For high-rise buildings, the wind pressure resistance is low; polyurethane foaming agent is used to foam polyurethane, and polyurethane foaming agent will produce toxic gas during the foaming process, and it cannot be completely eliminated after being used as heat insulation material, so The environmental protection factor is greatly reduced, and the cost is also high; rubber powder polystyrene particles and perlite particles are gradually being widely used. This insulation material is constructed on site, because the material is solid particles, which is easy to transport, and the method of use is simple during use. Excellent fire performance, low cost and other advantages, and no pollution, but there are also problems

[0003] In summary, there have been reports of using steel tailings as auxiliary raw materials to produce cement, wall bricks, and road materials, but there have been no reports about using steel tailings as the main raw material for the production of aerated blocks